Repeater jamming transmitter and casing for the same

(19)

(11)

EP 1 003 049 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	22.01.2003 Bulletin 2003/04

(43)	Date of publication A2:
	24.05.2000 Bulletin 2000/21

(21)	Application number: 99850162.1

(22)	Date of filing: 03.11.1999

(51)	International Patent Classification (IPC)⁷: G01S 7/38, H01Q 1/36

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

18.11.1998 SE 9803935

(71)	Applicant: CelsiusTech Electronics AB
	175 88 Järfälla (SE)

(72)	Inventors:
	Sjöstrand, Per 113 26 Stockholm (SE) Grabs, Jan 746 31 Balsta (SE) Näsvall, Alf 172 68 Sundbyberg (SE)

(74)	Representative: Falk, Bengt
	Saab Bofors Support AB Patents and Trademarks 691 80 Karlskoga 691 80 Karlskoga (SE)

(54)	Repeater jamming transmitter and casing for the same

(57) The repeater jamming transmitter (2) comprises transmitter antenna (7), receiver antenna (8) and electronics part (10) with amplifier and control circuits. In order to avoid self-oscillation caused by leakage between the transmitter antenna (7) and the receiver antenna (8) and to maintain the isolation a special connection arrangement (7,8,10) is included in the repeater jamming transmitter. By means of the connection arrangement the amplification of the repeater jamming transmitter can be increased without self-oscillation arising.

Search report